Like other lossless compression algorithms, there always exist some blobs of data, where the length of the location plus metadata exceeds that of the the origin

Like other lossless compression algorithms, there always exist some blobs of data, where the length of the location plus metadata exceeds that of the the original blob, due to the pigeon hole principle. The trouble in the case of pi-fad is that probably we will not know whether the location is longer or not before it is ever actually computed.